The track is still down. Spindle does not want to spin at low RPM's and spin speed will only calibrate to 1200 RPM. Replaced motor driver transistor. Checked and replaced spade lugs to motor interconnect leads. Reseated IC's on track interface PCB. Reseated CPU and track interface PCB's into edge connectors. Checked all system harnesses. Will consult with technical support for advice. Track down.